Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Plot of logarithm of the hazard ratio for atrial fibrillation versus body mass index (BMI), Cardiovascular Health Study, 1989–2008. The y-axis gives the logarithm of the hazard ratio; the x-axis gives BMI as weight in kilograms divided by height in meters squared. The plot shows the unadjusted linear term, linear and quadratic terms, and penalized cubic spline for BMI.
